to be clear Apple's "full" icloud backup is full in name only. if you get a new iphone and do a backup and restore, expect to spend several more hours setting up various apps and details on your new device. you'll have to log in to your apps on the new device and setup things there if the app doesn't work with iCloud's backup mechanism.
it might be better than android's backup system, but it still leaves a lot to be desired.
It's a feature, not a bug. Apps like banks or Signal don't want to get backed up as it's a security risk if someone could just duplicate the authentication.
It backs up... Photos, basically? With an iPhone you can take a complete image of the device, and never lose a file again. With Android, solid chance you'll never migrate to a new phone and not lose stuff. It's such a fucking shitty thing that doesn't need to be.
I've gone through like 5 Android phones back to back. Photos, documents, emails, installed apps, contacts... It's all seamless and works, literally just with Google's defaults.
